80 lines
2.2 KiB
TypeScript
80 lines
2.2 KiB
TypeScript
import promClient from "prom-client";
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const registry = new promClient.Registry();
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registry.setDefaultLabels({ service: "iam" });
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registry.registerMetric(
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new promClient.Counter({
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name: "iam_requests_total",
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help: "Total number of iam requests",
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labelNames: ["method", "endpoint", "status"],
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}),
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);
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registry.registerMetric(
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new promClient.Histogram({
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name: "iam_request_duration_seconds",
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help: "Iam request duration in seconds",
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labelNames: ["method", "endpoint"],
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buckets: [0.01, 0.05, 0.1, 0.3, 0.5, 1, 3, 5],
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}),
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);
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// 自动收集 Node.js 进程级指标（CPU/内存/事件循环/GC等）
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// 这些指标无需业务代码埋点，prom-client 自动采集
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promClient.collectDefaultMetrics({ register: registry });
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// Redis 权限缓存指标（I3 裁决：DB 驱动 + Redis 缓存可观测性）
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registry.registerMetric(
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new promClient.Counter({
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name: "iam_permission_cache_hits_total",
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help: "Total number of permission cache hits (Redis)",
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}),
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);
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registry.registerMetric(
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new promClient.Counter({
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name: "iam_permission_cache_misses_total",
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help: "Total number of permission cache misses (Redis)",
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}),
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);
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registry.registerMetric(
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new promClient.Counter({
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name: "iam_permission_cache_invalidations_total",
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help: "Total number of permission cache invalidations (Redis)",
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labelNames: ["reason"],
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}),
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);
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/**
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* 缓存指标访问器：供 PermissionCacheService 使用.
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* 避免在业务代码中直接操作 registry，统一通过此门面.
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*/
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export const cacheMetrics = {
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recordHit(): void {
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const metric = registry.getSingleMetric("iam_permission_cache_hits_total");
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if (metric && "inc" in metric) {
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(metric as promClient.Counter).inc();
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}
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},
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recordMiss(): void {
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const metric = registry.getSingleMetric(
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"iam_permission_cache_misses_total",
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);
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if (metric && "inc" in metric) {
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(metric as promClient.Counter).inc();
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}
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},
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recordInvalidation(reason: string): void {
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const metric = registry.getSingleMetric(
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"iam_permission_cache_invalidations_total",
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);
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if (metric && "inc" in metric) {
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(metric as promClient.Counter).inc({ reason });
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}
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},
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};
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export { registry as metricsRegistry };
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